Carlon Blue and Super Blue boxes?

Discussion in 'Electrical Forum discussion & Blog' started by Karl in NY, Oct 9, 2013.

  1. Karl in NY

    Karl in NY New Member

    Jan 28, 2011
    Northern NY
    The round ceiling fixture boxes supposedly take regular 8-32 machine screws to mount fixture crossbars...

    I can't get them to take them, even when running starter threads with an 8-32 tap. I have been to their website, and they say use the 8-32 screws that come with the fixtures to secure the crossbars to the boxes.

    I must be doing something wrong, as I don't think NEC/UL permits self-tap screws (like sheetrock screws), but only screws with machine threads....

    What am I doing wrong?

    I have seen plenty of houses using self-tap screws into the blue boxes, apparently for the same reason.
    Last edited: Oct 9, 2013
  2. hj

    hj Moderator & Master Plumber Staff Member

    Aug 31, 2004
    Cave Creek, Arizona
    IF you 'run the threads" with an 8-32 tap, AND you have 8-32 machine screws, there should be absolutely no reason they should not tighten up.
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